Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5029342 | Welder's helmet and photovoltaic power transmission circuit therefor | Marc Stein | 1991-07-09 |
| 4535410 | Power supply failure early warning detector | — | 1985-08-13 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5029342 | Welder's helmet and photovoltaic power transmission circuit therefor | Marc Stein | 1991-07-09 |
| 4535410 | Power supply failure early warning detector | — | 1985-08-13 |